Published August 7, 2014
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Mid-IR AGPMs for ELT applications
Chicago
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Abstract
The mid-infrared region is well suited for exoplanet detection thanks to the reduced contrast between the planet and its host star with respect to the visible and near-infrared wavelength regimes. This contrast may be further improved with Vector Vortex Coronagraphs (VVCs), which allow us to cancel the starlight. One flavour of the VVC is the AGPM (Annular Groove Phase Mask), which adds the interesting properties of subwavelength gratings (achromaticity, robustness) to the already known properties of the VVC. In this paper, we present the optimized designs, as well as the expected performances of mid-IR AGPMs etched onto synthetic diamond substrates, which are considered for the E-ELT/METIS instrument.
Additional Information
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). Date Published: 7 August 2014. The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (ERC Grant Agreement n.337569) and from the French Community of Belgium through an ARC grant for Concerted Research Actions.Attached Files
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Additional details
- Eprint ID
- 57681
- Resolver ID
- CaltechAUTHORS:20150520-074114061
- European Research Council
- 337569
- Communauté française de Belgique
- Created
-
2015-05-20Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 9147